The SWIFT or SORT Code is usually demanded when there is a transfer between banks most especially if its a bank outside your country. It is a standard format also called the Business Identifier Codes (BIC) and it helps identify banks and financial institutions in a unique way globally.

The Swift or Sort code enables a bank initiating a transfer to know where another bank is and who they are.

So if you are asked for your SWIFT or SORT code by you bank look down in the table provided to get your Swift/Sort Code